I 've installed an application in my mac. Now that I try to run it I see this window, asking me for system credentials. http://a.imageshack.us/img85/594/systemg.jpg I 've given my admin password many times in many installations. But I never used the system keychain. In fact, I give 'admin' as username, and my computer password, and it is not accepted! So, the application do not run. Additionally I discovered that there is system password that I do not even know. Can you help me find out what is going on with this password and finally run the application?